document.write( "Question 61032: Find the slope of any line perpendicular to the line through points (8, 17) and (9, 9). \n" ); document.write( "
Algebra.Com's Answer #41958 by funmath(2933)\"\" \"About 
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Find the slope of any line perpendicular to the line through points (8, 17) and (9, 9).
\n" ); document.write( "The slope between these two points can be found with the slope formual:
\n" ); document.write( "\"highlight%28m=%28y2-y1%29%2F%28x2-x1%29%29\", m=slope, (x1,y1) and (x2,y2) are the given points.
\n" ); document.write( "(x1,y1)=(8,17) and (x2,y2)=(9,9)
\n" ); document.write( "\"m=%289-17%29%2F%289-8%29\"
\n" ); document.write( "\"m=-8%2F1\"
\n" ); document.write( "\"m=-8\"
\n" ); document.write( "Perpendicular lines have slopes that are negative reciprocals of each other. (That mean that they're opposite signs and upsidedown.)
\n" ); document.write( "The slope of any perpendicular line through the line created by those two points is: \"highlight%28m=1%2F8%29\"
\n" ); document.write( "Happy Calculating!!!
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